Filter product having high moment of inertia

Abstract

A filter product for use in a consumer product. The consumer product may comprise a tobacco product, such as a combustible cigarette or a heat-not-burn stick. The filter product may comprise a plurality of cellulose acetate fibers having hollow core sections.

1 . A filter product for use in a consumer product, said filter product comprising:
 a plurality of cellulose acetate fibers,   wherein said fibers include hollow core sections,   wherein said fibers have, on average, an area moment of inertia of at least 50,000 μm 4 .   
     
     
         2 . The filter product of  claim 1 , wherein the cellulose acetate has a degree of substitution (DS) from 2.2 to 2.8. 
     
     
         3 . The filter product of  claim 1 , wherein each of said fibers has a closed C shaped cross section. 
     
     
         4 . The filter product of  claim 3 , wherein a fiber has a closed C shape cross section when the cross section presents a proximate first end and a proximate second end and satisfies at least one condition A(i) or A(ii) and at least one condition B(i) or B(ii):
 A. At least a portion of a first proximal end is either:
 i. oriented toward at least a portion of a second proximal end, or 
 ii. contacting a portion of the second proximal end; and 
   B. The first and second proximal ends form either:
 i. a channel defined by a gap or separation between the first proximal end and the second proximal end of the “C” shape and having a transverse distance D 1 , wherein the channel leads from an outer surface of the filament to a hollow core, wherein the hollow core is defined by an inner filament surface and having a diameter D 2 , and wherein D 2 /D 1 >1, or 
 ii. no channel resulting from at least a portion the first proximal end contacting at least a portion of the opposing second proximal end. 
   
     
     
         5 . The filter product of any of  claims 1-4 , wherein the consumer product is a tobacco product. 
     
     
         6 . The filter product of  claim 5 , wherein the tobacco product is a combustible cigarette. 
     
     
         7 . The filter product of  claim 6 , wherein the fibers each have a denier per filament (dpf) from 1.8 to 20.0. 
     
     
         8 . The filter product of  claim 7 , wherein said filter product is formed from a tow of fibers, wherein the tow has a total denier from 20,000 to 40,000. 
     
     
         9 . The filter product  claim 5 , wherein the tobacco product is a heat-not-burn stick. 
     
     
         10 . The filter product of  claim 9 , wherein the fibers each has a denier per filament (dpf) from 8.0 to 20.0. 
     
     
         11 . The filter product of  claim 9 , wherein the fibers each has a denier per filament (dpf) from 3.4 to 8.0. 
     
     
         12 . The filter product of  claim 9 , wherein said filter product is formed from a tow of fibers, wherein the tow has a total denier from 20,000 to 40,000. 
     
     
         13 . The filter product of  claim 1 , wherein the filter product comprises a cylindrical rod with a solid cross section. 
     
     
         14 . The filter product of  claim 1 , wherein the filter product comprises a cylindrical tube having an inner diameter and an outer diameter so as to form a hollow cross section. 
     
     
         15 . The filter product of  claim 1 , further comprising a plasticizer. 
     
     
         16 . The filter product of  claim 15 , wherein the plasticizer is triacetin. 
     
     
         17 . The filter product of  claim 1 , wherein the filter product has average area moment of inertia of said fibers is at least 60,000 μm 4 , at least 70,000 μm 4 , and/or at least 75,000 μm 4  or a fiber-to-metal coefficient of friction of no more than 0.565 or a fiber-to-fiber coefficient of friction of no more than 0.135. 
     
     
         18 . The filter product of  claim 1 , wherein the consumer product is a botanical product. 
     
     
         19 . A filter product for use in a consumer product, said filter product comprising:
 a plurality of cellulose acetate fibers,   wherein said fibers include hollow core sections,   wherein said fibers have a fiber-to-metal coefficient of friction of no more than 0.565.   
     
     
         20 . A consumer product comprising:
 tobacco; and a filter product, wherein said filter product comprises a plurality of cellulose acetate fibers having hollow core sections; wherein said consumer product is a heat-not-burn stick or a combustible cigarette.